Yamaha F25SMHC 25 hp

Description

We have the Yamaha F25SMHC for sale, new in its crate and ready to ship anywhere in the world. It is Yamaha’s 25 horsepower four-stroke with a 15 inch short shaft, tiller steering and a pull start. The 432 cc twin uses Yamaha’s battery-less electronic fuel injection, and the whole motor weighs about 126 pounds, which Yamaha says gives it class-leading power-to-weight.

The F25 is one of Yamaha’s best portable outboards. When Yamaha redesigned it, they made it about 25 percent lighter than the previous model while adding fuel injection that needs no battery. The Yamaha F25SMHC for sale is the simplest, lightest version: pull start, manual tilt, no battery, no wiring. It is ideal for RIBs, inflatables, aluminium boats and skiffs with a 15 inch transom where you want strong performance without complexity. Here is everything you need to know before you order.

Yamaha F25SMHC Specifications

Yamaha publishes the F25 specifications on its 25, 20 and 15 HP portables page. The Yamaha F25SMHC for sale is the short shaft, manual start tiller model.

The Model Code

F is four-stroke. 25 is horsepower. S is the 15 inch short shaft. M is manual start. H is tiller handle. C is the generation. The long shaft pull start version is the Yamaha F25LMHC. With electric start, see the Yamaha F25SWHC, and with electric start plus power trim and tilt, the Yamaha F25SWTHC.

Why the Yamaha 25 Stands Out

Twenty-five horsepower is the largest size most people still think of as portable. Yamaha’s current F25 pushes that idea further than most. Its 432 cc twin delivers strong, relaxed power, and the redesign cut weight dramatically compared with the previous generation, so the motor feels much more manageable on a transom. The battery-less EFI gives easy starting, steady idle and sharp throttle response, all without the need for a battery.

On the water, the Yamaha F25SMHC for sale planes RIBs and aluminium boats quickly with a full load, cruises at a relaxed engine speed and holds its pace into chop. For a lot of boats in the 12 to 16 foot range, it is the perfect match.

Battery-Less EFI Explained

Fuel injection measures fuel electronically, which makes starting easier, idle steadier and throttle response crisper than a carburettor. It also handles cold weather and stale fuel far better. Normally fuel injection needs a battery. Yamaha’s system powers itself from the engine’s own generator as soon as you pull the cord, so the Yamaha F25SMHC for sale gives you all the benefits of EFI on a simple pull start motor. Add automatic decompression, which keeps the pull light, and you have a 25 HP that anyone can start.

There is also no carburettor to gum up when the motor sits over winter, which removes the most common reason small outboards refuse to start in spring.

Boats That Suit the Yamaha F25SMHC for Sale

RIBs and inflatables

Many RIBs and inflatables from about 12 to 15 feet are rated for 25 to 40 HP. A 25 gets them up on the plane fast with four people aboard and gives a confident ride in coastal conditions. As a tender motor for a larger yacht, it makes even long runs ashore quick.

Aluminium boats and jon boats

On a 14 to 16 foot aluminium boat or jon boat with a 15 inch transom, the Yamaha F25SMHC for sale gives brisk performance with a full load of people and gear, and smooth slow running for fishing.

Skiffs and small fibreglass boats

Light skiffs and small fibreglass boats with a 15 inch transom rated for 25 HP are a natural fit.

How It Runs

Put the motor in neutral and give the cord a steady pull. The EFI powers up from the pull, and the automatic decompression keeps the effort light, so the Yamaha F25SMHC for sale usually starts first or second pull with no choke. Once running, the 432 cc twin idles smoothly and quietly. Open the throttle and it responds immediately, lifting the boat onto the plane without hesitation. Shift at idle; reverse is strong. The tiller has adjustable steering friction to hold a straight course. Yamaha’s optional Variable Trolling RPM Switch can be added to fine-tune idle speed for trolling.

Fuel

The Yamaha F25SMHC for sale runs from a separate portable tank with a primer bulb hose. Open the vent, squeeze the bulb until firm and start. Use fresh unleaded with no more than 10 percent ethanol, keep the fuel filter in good condition and add stabiliser if the boat will sit.

Fitting the Motor

Check your boat’s capacity plate for horsepower and engine weight. At about 126 pounds, use two people or a hoist. Mount the motor in the centre of the transom with the anti-cavitation plate at or just below the bottom of the hull, tighten the clamps firmly and through-bolt it for a permanent installation. Fit a safety line. Set the trim rod so the leg is vertical when you are running. Connect the fuel, check the oil, start in neutral and confirm the cooling water stream.

Break-In

For the first hours, run at varied low and medium throttle, add short bursts higher later, avoid long full-throttle runs and check the oil before each trip. Change the oil at the end of the break-in. The procedure is in the owner’s manual, available on Yamaha’s owner’s manual page. A careful break-in gives the Yamaha F25SMHC for sale the best start in life.

Maintenance

After salt water use, flush with fresh water and rinse the outside. Each season, change the engine oil and gear oil, check the plugs, grease the clamp screws, swivel and tilt points, check the prop and anode, and replace the fuel filter as recommended. Every few seasons, replace the water pump impeller. Before winter, stabilise the fuel, change the oil, flush and store the motor upright somewhere dry. In cold places, drain all water before frost.

Troubleshooting

If the Yamaha F25SMHC for sale will not start, check the tank vent, hose connections, primer bulb, fuel freshness and kill cord clip, and make sure it is in neutral. If it starts then dies, open the tank vent. If it runs rough, check the fuel filter for water or dirt. If the cooling stream is weak, clear the tell-tale outlet, then check the intake and impeller. For anything else, a Yamaha dealer can check the EFI quickly with their diagnostic tools.

A Day on a RIB

You connect a tank of fresh fuel, squeeze the bulb and pull. The Yamaha F25SMHC for sale starts first time. Four of you head out of the harbour, and with a twist of the throttle the RIB is up on the plane and running dry across the bay. You stop at a cove for lunch, then run along the coast in a building breeze. The 25 keeps the boat on the plane in the chop with power to spare. Back at the mooring, a freshwater flush and the motor is tilted up for the night.

A Day of Fishing

On a 16 foot aluminium boat, you run across the lake fast with two anglers and a cooler, then drop to trolling speed at the drop-off. The EFI holds a steady idle all morning. When you move spots, an easy pull restarts the motor. Fuel use is modest and the motor is quiet enough to talk over.

20 HP or 25 HP?

The Yamaha F20 and F25 share the same 432 cc platform and battery-less EFI. The 25 simply makes more power. If your boat is rated for 25 HP and local rules allow it, the Yamaha F25SMHC for sale gives you more speed with heavier loads at very little extra weight. If your boat is rated at 20 HP, or you want to keep costs down, the Yamaha F20SMHB is the equivalent model.

Pull Start or Electric Start?

Pull start keeps the Yamaha F25SMHC for sale as light and simple as possible: no battery to buy, charge or replace, nothing electrical to corrode. With battery-less EFI and automatic decompression, it is an easy pull. If you start and stop many times a day, want to charge a battery for electronics or prefer key start, the F25SWHC adds electric start with a manual backup on the same engine.

Common Mistakes

Check the oil in the Yamaha F25SMHC for sale before the first start. Use plain unleaded, never two-stroke mix. Shift only at idle. Keep the fuel and fuel filter clean, because EFI relies on clean fuel. Flush after salt water. Fit a safety line. And stabilise the fuel before winter storage.

Choosing a Propeller

The standard prop suits most boats. If yours is heavy or always loaded, a lower pitch helps the engine reach its 5,000 to 6,000 rpm full throttle range and improves hole shot. If the engine hits the top of the range too easily, a higher pitch may add speed. Yamaha’s online prop selector is a good starting point, and we can help you choose.

Hot and Cold Climates

EFI starts reliably in heat and cold. In hot places, keep fuel fresh and shaded and tilt the motor out of the water when moored. In cold places, drain all water before frost and change the gear oil before winter.

Salt Water Care

Flush after every salt water trip, rinse the outside, check the anode each season and spray the powerhead with a corrosion inhibitor now and then. With that care, the Yamaha F25SMHC for sale will handle years of coastal use.

Lifting and Trailering

At about 126 pounds, use two people or a hoist and keep the leg pointing down. When trailering with the motor on, support the leg with a transom saver.

Teaching New Drivers

Set simple rules for anyone who runs the Yamaha F25SMHC for sale: start in neutral with the kill cord on, check the cooling stream, idle down before shifting, look behind before reversing and tilt up before the shallows.

Getting Better Fuel Economy

With the Yamaha F25SMHC for sale, trim the boat to run level, keep the hull and prop clean, cruise a little below full throttle and match the prop to your load. Those habits help the motor go further on every tank.

A Season of Ownership

In spring, the oil is checked, fresh fuel connected and the cord pulled. With no carburettor to gum up, the Yamaha F25SMHC for sale normally starts right away. Through the summer it runs coastal trips, fishing days and tender runs. After salt water, it gets a flush. In autumn, the oil and gear oil are changed, the fuel stabilised and the motor stored. Every few seasons, the impeller and fuel filter are replaced.

What Comes in the Crate

The motor arrives assembled with the propeller fitted, the owner’s manual and factory paperwork. Ask us whether a fuel tank is included. Check the oil tag and level before the first start.

Warranty Notes

Yamaha’s factory warranty terms vary by country and type of use. Ask your local Yamaha dealer what they honour, and keep your invoice and serial number safe.

Using It as a Tender Motor

On a larger yacht tender, the Yamaha F25SMHC for sale makes a real difference. A loaded tender planes in seconds, so even a distant anchorage is only a short run from the beach, and the extra power is welcome when the wind picks up on the way back. It is best left on the tender or moved with a davit or lifting tackle. At anchor overnight, tilt it up to keep the lower unit clean and lock it to the transom in busy harbours. On beach landings, tilt up early and walk the last few metres so sand does not get drawn into the water pump.

Before You Order

Measure your transom from the top to the bottom of the hull, check your boat’s capacity plate and make sure the transom is solid. If the transom is about 15 inches and the boat is rated for 25 HP or more, the Yamaha F25SMHC for sale is a good fit. For a 20 inch transom, choose the long shaft F25LMHC instead. Send us a photo of the transom and capacity plate if you would like us to confirm.

Lighter Than the Old 25

If you have used an older 25 HP outboard, the first thing you will notice about the Yamaha F25SMHC for sale is how much lighter it feels. Yamaha’s redesign made the current F25 about 25 percent lighter than the model it replaced. That makes a real difference on the transom of a RIB or small aluminium boat, where a heavy motor makes the stern squat and slows the boat getting onto the plane. A lighter motor lets the boat sit level, plane sooner and use less fuel. It also makes fitting and removing the motor less of an ordeal.

Who We Are

We are an online dealer of new outboard motors shipping worldwide. The Yamaha F25SMHC for sale is a regular stock item, and questions are answered by people who know outboards. If you want help choosing between the different F25 versions, or picking a fuel tank and propeller to go with the motor, send us a message and we will give you a straight answer.

Planing Performance in Practice

What does 25 horsepower actually feel like on a small boat? On a typical 13 foot RIB with three adults and some gear, a 25 gets the boat out of the water and planing within a few seconds of opening the throttle, without the bow climbing high and blocking your view. Once on the plane, you can ease the throttle back to a comfortable cruise and the boat stays up, running flat and dry. In a short chop, there is enough reserve to keep the boat planing rather than dropping off and wallowing. On a 16 foot aluminium boat, the extra power over a 15 or 20 is most obvious with a full load: the boat still planes cleanly with two or three anglers, a cooler and a full fuel tank aboard. That reserve is the main reason so many owners choose 25 horsepower when their boat is rated for it.

Keeping the Fuel System Healthy

Fuel injection is reliable, but it does depend on clean fuel. Buy fuel from busy stations where it turns over quickly, use a funnel with a filter when filling portable tanks, keep tanks sealed and out of the sun, and replace the fuel filter at the intervals in the manual. If you ever suspect water in the fuel, drain the tank and start fresh. Those simple habits keep the injectors clean and the engine running smoothly for years.

Running Costs

The Yamaha F25SMHC for sale is economical. EFI meters fuel precisely, so consumption at cruise is modest and very low when trolling. Oil changes are small, wear parts are inexpensive and widely available, and there is no battery to buy.

Why Yamaha

Yamaha’s dealers and parts reach almost every country with boats. The F25 is light, modern and proven, and Yamaha outboards hold their value well. That is why we keep the Yamaha F25SMHC for sale in stock.

25 HP Versions Compared

Browse the 25 HP Yamaha section or the full Yamaha outboard range.

Ordering

Add the Yamaha F25SMHC for sale to your cart and check out, or contact us first. We confirm stock and delivery, pack the motor with extra protection and send tracking once it ships worldwide. International buyers pay their own import duty and taxes; we provide the paperwork customs needs. See our refund and return policy, terms and conditions, reviews, about us page and blog.

FAQ: Yamaha F25SMHC for Sale

Is the Yamaha F25SMHC for sale new?

Yes, new and crated.

Is the Yamaha F25SMHC fuel injected?

Yes, with battery-less EFI.

Does the Yamaha F25SMHC for sale need a battery?

No. It is pull start and the EFI powers itself.

What transom height does the Yamaha F25SMHC for sale fit?

About 15 inches.

How heavy is the Yamaha F25SMHC for sale?

About 126 pounds.

Does the Yamaha F25SMHC for sale have reverse?

Yes.

Is the prop included?

Yes.

Is the Yamaha F25SMHC for sale good in salt water?

Yes, with a freshwater flush after use.

Final Word

If you are still deciding, tell us your boat’s make, length and transom height and we will tell you honestly whether a 25 is the right size, or whether a 20 or a long shaft model would suit you better.

If you want a light, modern 25 HP with fuel injection and none of the complexity of batteries and wiring, the Yamaha F25SMHC for sale is the one for a 15 inch transom. Add it to your cart, or ask us anything first. Everything else we stock is in the shop.